hey chris, its funny but im trying to do something similar in europe, particulary eastern europe but not with FX but actuall access to US markets. If you start the business in your country of residence you will be responsible for your profits to be taxed by that country, your clients will also have to pay taxes (should they make money) in the country they reside in for more than 180 days/year. i am looking to go with IB and try to set up bus. that way. As far as protection, if you go with IB i woud feel pretty confident that they will not disapear with my clients money, and the accounts are protected, so this is a big plus that you can sell your customers on, because i know in europe, particulary eastern europe its a problem. trust that is. either way good luck with it. its an experience for me as well, and hopefully it wont be a bad one.